Out like a lightOut like a light : PhrasesMeaning: Fast asleep; suddenly unconscious. Example: After a 12-hour shift, nurse Trudy came home and she was out like a light in no time at all. Origin: In the American 20th century, when the wonders of electricity spread across the land, people could turn on and shut off lights with just a flick of a switch. By the middle of the century, out like a light was a way of saying that a person had fallen asleep very quickly. | ||
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